In 32.5. Package Selection, in the warning box at the start of the secrion, we say

[...]Packages known to cause such problems are assigned to the @Conflicts (variant) group, where variant is Server or Client. If you specify @Everything in a kickstart file, be sure to exclude @Conflicts (variant) or the installation will fail:

and then follow by an example that is contradictory to what we just said.
@Everything (Server)
-@Conflicts

To be consistent with the above text, the example should read
@Everything
-@Conflicts (Server)

Obviously, please test before updating docs, I personally never use @Everything installs.